Water pump



FIG. 1 is a perspective view of a water pump showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a top view thereof.

The broken lines shown in FIGS. 1–6 represent environmental structure and form no part of the claimed invention. 

The ornamental design for a water pump, as shown and described. 